flap door

noun

1. Also called falling door. a door hinged at the bottom so as to fall downward and outward.
2. a door placed horizontally or on a shallow incline, as an exterior cellar door.

Word History and Origins

Origin of flap door¹

First recorded in 1835–45

Example Sentences

It was covered with a canopy, and Lawler sat beside a flap door.

From Seattle Times

Miyax peered out the flap door.

From Literature

But not all who slipped into the congressional chambers through this flap door wished to exit.

From The New Yorker

But not all who slipped into the congressional chambers through this flap door wished to exit.

From The New Yorker

Opening a flap door at the bottom of a lime-green bin the size of an industrial fridge, her gloved hands reach in to fish out the contents inside.

From The Guardian